The precess of breaking up or a lipuid into fine droplets by spraying is called___________________?

Related Mcqs:

1. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the________________?

   A. exhaust will be smoky
   B. piston rings would stick into piston grooves
   C. exhaust temperature will be high
   D. engine starts overheating
   E. scavenging occurs

2. The magneto in an automobile is basically__________________?

   C. transformer
   B. d.c. generator
   C. capacitor
   D. magnetic circuit
   E. a.c. generator

3. In a typical medium speed 4-stroke cycle diesel engine________________?

   A. compression starts at 35° after bottom dead center and ends at top dead center
   B. compression starts at bottom dead center and ends at top dead center
   C. compression starts at 10° before bottom dead center and, ends just before top dead center
   D. may start and end anywhere
   E. none of the above

4. Auto-ignition temperature is____________________?

   A. minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
   B. temperature at which it solidifies or congeals
   C. that at which it catches fire without external aid
   D. indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
   E. indicated by 50% distillation temperature

5. The pistons are usually given a coating such as tin plating in order to________________?

   A. reduce weight
   B. conduct heat efficiently
   C. reduce possibility of scoring
   D. reduce friction
   E. increase lubrication effect

6. Sulphur content in diesel oil should not be more than_________________?

   A. 10%
   B. 5%
   C. 1%
   D. 0.1%
   E. 0.01%

7. Fuel consumption with increase in back pressure will________________?

   A. increase
   B. decrease
   C. remain unaffected
   D. depend on other factors
   E. none of the above

8. In petrol engine, increase of cooling water temperature will_________________?

   A. increase the knocking tendency
   B. decrease the knocking tendecny
   C. not affect the knocking tendency
   D. increase or decrease knocking tendency depedning on strength and time of spark
   E. unpredictable

9. For low load operation, more suitable (economical) engine is_______________?

   A. S.I. engine
   B. C.I. engine
   C. both are equally good
   D. multicylinder engine
   E. two stroke engine

10. Scavenging air is supplied to a two-stroke engine at a density greater than that of atmosphere. This means the engine is__________________?

    A. Supercharged
    B. Not supercharged
    C. Charged
    D. Supercharged provided its speed is low